Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e888dbeecd937d303d4b31b594f0cfe37beefd189981e47611ee1ac0ed0f3d33' 
  AND token = '2dr2EOVVu7fI0gh6CidOyDDly7ID4/2Wht6YnHwiBeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}